Compress Image to 100KB Online
Quick answer: Use this free browser-based compressor to reduce image file size for forms, websites, email and uploads that require smaller files.
Your image is processed in your browser — nothing is uploaded.
Reduce image size for websites, email and social media
Compress JPG and PNG images to reduce file size without sending the image to a server. This is useful for faster websites, social media uploads, email attachments, forms and saving storage space.
How it works
The tool uses your browser to draw the image to a canvas, lower the output quality and create a downloadable compressed JPG. Your original file stays on your device.
Best settings
- Use 60–80 quality for most website and email images.
- Use a max width of 1200–1600px for blog images and web uploads.
- Lower quality more if a form requires a very small file size.
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Frequently Asked Questions
Is my image uploaded?
No. The compression happens locally in your browser.
Can I compress JPG and PNG files?
Yes. You can choose most common image formats supported by your browser.
Can this guarantee exactly 100KB?
File size depends on the image. Lower the quality and width until you reach the size you need.